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| author | Etienne Carriere <etienne.carriere@linaro.org> | 2023-03-22 14:22:12 +0100 |
|---|---|---|
| committer | Jens Wiklander <jens.wiklander@linaro.org> | 2023-03-30 08:27:05 +0200 |
| commit | b3b4ced12c1bc829888803ce07fff317e590ec1c (patch) | |
| tree | e09b21a6b40c98ecddc1a233b4c66138fa55ca53 /Documentation | |
| parent | 0d0eaa780ba3b8a02a1ac87f38c34dfe365f27d6 (diff) | |
optee: add per cpu asynchronous notification
Implements use of per-cpu irq for optee asynchronous notification.
Existing optee async notif implementation allows OP-TEE world to
raise an interrupt on which Linux optee driver will query some pending
events. This change allows the signaling interrupt to be a per-cpu
interrupt as with Arm GIC PPIs. Using a PPI instead of an SPI is useful
when no GIC lines are provisioned in the chip design and there are spare
PPI lines.
Cc: Jens Wiklander <jens.wiklander@linaro.org>
Cc: Sumit Garg <sumit.garg@linaro.org>
Cc: Marc Zyngier <maz@kernel.org>
Co-developed-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
[JW: fixing a spell error in @notif_pcpu_wq description]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions